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Obviously the absolute values of any choice depends on how well-scaled the initial problem is. Marquadt recommended starting with a value λ<sub>0</sub> and a factor ν>1. Initiall set λ=λ<sub>0</sub>; and computing the residual sum of squares ''S''('''p''') after one step from the starting point with the damping factor of
λ=λ<sub>0</sub>; and secondly with λ/ν If both of these are worse than the initial point then the damping is increased by successive multiplication by ν until a better point is found with a new damping factor of λ
for some ''k''.
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